/*
 *  Copyright 2005 Blandware (http://www.blandware.com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.blandware.atleap.webapp.action.forum.subscription;

import com.blandware.atleap.common.ForumModuleConstants;
import com.blandware.atleap.persistence.exception.UpdateException;
import com.blandware.atleap.service.exception.BeanNotFoundException;
import com.blandware.atleap.service.forum.ForumManager;
import com.blandware.atleap.webapp.action.core.BaseAction;
import com.blandware.atleap.webapp.form.forum.ForumSubscriptionForm;
import org.apache.commons.validator.GenericValidator;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * <p>Activates a forum subscription.</p>
 * <p><a href="ActivateForumSubscriptionAction.java.html"><i>View source</i></a></p>
 *
 * @author Roman Puchkovskiy <a href="mailto:roman.puchkovskiy@blandware.com">
 *         &lt;roman.puchkovskiy@blandware.com&gt;</a>
 * @version $Revision: 1.2 $ $Date: 2008/04/29 17:51:51 $
 * @struts.action path="/forum/subscription/activate"
 * name="forumSubscriptionForm"
 * scope="request"
 * validate="false"
 * @struts.action-forward name="showForum"
 * path="/forum/forum/show.do"
 * redirect="true"
 * @struts.action-forward name="showTopic"
 * path="/forum/topic/show.do"
 * redirect="true"
 */
public final class ActivateForumSubscriptionAction extends BaseAction {
	/**
	 * @param mapping  The ActionMapping used to select this instance
	 * @param form     The optional ActionForm bean for this request (if any)
	 * @param request  The HTTP request we are proceeding
	 * @param response The HTTP response we are creating
	 * @return an ActionForward instance describing where and how
	 *         control should be forwarded, or null if response
	 *         has already been completed
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
	                             HttpServletRequest request, HttpServletResponse response) {

        ForumSubscriptionForm forumSubscriptionForm = (ForumSubscriptionForm) form;

        Long id = null;
        String token = null;
        if (!GenericValidator.isBlankOrNull(forumSubscriptionForm.getId())) {
            try {
                id = Long.valueOf(forumSubscriptionForm.getId());
            } catch (NumberFormatException e) {
            }
        }
        token = request.getParameter("token");

        ForumManager forumManager = (ForumManager) getBean(ForumModuleConstants.FORUM_MANAGER_BEAN);

        try {
            forumManager.activateSubscription(id, token);
        } catch (BeanNotFoundException e) {
            ActionMessages errors = new ActionMessages();
            errors.add("subscriptionNotFound", new ActionMessage("forum.subscription.errors.notFound"));
            saveErrors(request, errors);
            return mapping.findForward("showForum");
        } catch (UpdateException e) {
            ActionMessages errors = new ActionMessages();
            errors.add("cannotActivate", new ActionMessage("forum.subscription.errors.cannotActivate"));
            saveErrors(request, errors);
            return mapping.findForward("showForum");
        }

        ActionMessages messages = new ActionMessages();
        messages.add("success", new ActionMessage("forum.subscription.messages.successfullyActivated"));
        saveMessages(request, messages);
        return mapping.findForward("showForum");
	}
}
